Hi. I'm surprised you say so. Montréal has loads of good restaurants and for US$100/head (even C$100/head) you can certainly find something very nice.

Have a look at the March 2006 edition of Gourmet magazine which is devoted to Montréal (http://www.epicurious.com/gourmet, but you're better off getting yourself a printed copy). Also have a look (if you speak some French) at http://www.voir.ca/restos/default.aspx which is the quintessential guide to Montréal restaurants.

I will leave specific suggestions to the experts, as it's been 2-3 years now since I left the city and things do chance on the culinary scene.